Question

6) the solutions in this experiment are observed

interacting with visable light at a wavelenth of 530nm. explainwhy

530 nm is used as opposed to any other wavelength in thevisible

region.

7)in cells used in the absorbance measurement are accurately

calibrated to ensure that the pathlength is as indicated. ifa

student unknowingly measured the absorbance of solution A-Ein

0.95cm cell and then used a cell of 1.00 cm pathlength for

measurement of the unknown solutions absorbance, how wouldthis

affect the calculated percentage of aspirin in the unknown?

8) the molar absorpitivity for the asprin-ion

complex may be determined from the Beer's law plot. what isits

value? show calculations.

9) if the iron solution was incorrectly diluted to 0.002M forthe

unknown,what would be the effect on the calculated percentof

aspirin in the tablet? explain